In the most anticipated fight of the year, Floyd Mayweather (43-0, 26 KOs) will take on Robert Guerrero (31-1-1, 18 KOs) Saturday night at the MGM Grand Garden Arena in Las Vegas for the WBC and vacant The Ring Welterweight Championships.

Add in the hype around a legend of the sport like Mayweather and his undefeated streak and boxing enthusiasts from all over the world will be tuning in to this marquee matchup, ready to see the best action of 2013.

While Mayweather fans will be hoping for a definitive win over a journeyman like Guerrero, casual fans and Money haters will be looking for a Buster Douglas/Mike Tyson style upset on the grandest of scales.

All of this hype is building the anticipation for this fight, and Saturday’s brawl has all the earmarks of an instant classic.

While Mayweather is one of the greatest fighters of all time and arguably the greatest fighter of the last 15 years, there is one opponent that even the undefeated champion can’t beat—Father Time.

The years of in-ring experience have turned Money into a great defensive fighter that is as dangerous counterpunching as he is pushing the tempo offensively, but at 36 years old, there is little doubt that the elite speed that made him dangerous will start to slow sooner rather than later.

Mayweather has always been one of the most prepared fighters in the sport—both physically and mentally—but there is nothing he can do if his age is slowing down his reaction speed. Money is still the heavy favorite, but the boxing world will be looking for a chink in the champion’s armor.

Guerrero’s Biggest Weakness

While Mayweather comes into Saturday’s fight known for his speed and elusiveness, Guerrero comes in known for his power advantage and ability to devastate his opponent at both long- and close-range distances.

The problem for Guerrero is that he can sometimes get caught flat footed—something he avoided in his previous fight against Andre Berto—and if Money sees that opening to catch the challenger off guard, he’ll capitalize on it.

Guerrero must come out as the aggressor in this fight and keep pushing the tempo throughout this matchup if he wants a chance to win. If Mayweather spoils the game plan, though, expect The Ghost to fall back into his old routine of picking shots while flat footed.

If Guerrero fights slow and methodical, Mayweather will stick-and-move his way to a victory.

Main Event Prediction

After Guerrero spends the first three rounds attacking Mayweather with everything he has, the tempo will slow, and it will be Money’s chance to be aggressive and pick apart The Ghost with a great mix of punches and counterpunches.

While this fight will consist of plenty of back-and-forth brawling, Mayweather is too fast and too gifted defensively to lose this fight. Guerrero has a tough chin so a knockout is unlikely, so the victory will go to Money via decision.